Mattress Rollover Detection Using Segmented Pressure Sensing Zones
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Solution Overview
Problem
Existing bed systems face challenges in accurately sensing and responding to the movement of multiple users, particularly when one user rolls over onto the other's side, as they struggle to isolate and interpret pressure readings from multiple users effectively.
Innovation Solution
A bed system with two support portions and sensors that detect pressure changes, transmitting data to a controller to determine if a user has rolled over, allowing for adjustments in environmental conditions such as pressure, temperature, or articulation of the bed to enhance user comfort and sleep quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If pressure sensors are used to detect user movements on the bed, then user movement tracking capability is improved, but the ability to accurately isolate and interpret pressure readings from multiple users deteriorates when one user rolls over onto the other's side
Solution Approach 1:
The bed support surface is divided into multiple discrete pressure sensing zones or regions. Each zone independently measures pressure data, allowing the system to segment and track pressure changes from different users separately. This segmentation enables accurate identification of rollover events by comparing pressure patterns across adjacent zones, resolving the contradiction between detecting user movements and isolating pressure readings from multiple users.
2Speed
If the bed system monitors pressure changes to detect rollover events, then responsiveness to user movements is improved, but the complexity of the system increases due to additional sensors and control logic
Solution Approach 1:
The pressure sensing functionality is integrated directly into the bed support structure itself, combining the support function and detection function into a single unified system. This merging eliminates the need for separate sensor assemblies and reduces overall system complexity while maintaining high responsiveness to user movements. The control logic is simplified by using the existing support structure as the sensing medium.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively tracks user movements and adjusts the bed environment to improve sleep quality by isolating pressure readings from multiple users, enhancing comfort and responsiveness to rollover events.
Implementation Method 1
a sensor configured to sense first pressure in the first support portion. The sensor is further configured to sense second pressure in the second support portion
Data Source
AI summary
A mattress has a first support portion configure to receive and support a first user and a second support portion configured to receive and support a second user. The first support portion and the second support portion are adjacent to each other such that the first user is capable of rolling over from the first support portion to the second support portion while sleeping on the first support portion. A sensor is configured to sense first pressure in the first support portion and sense second pressure in the second support portion. The sensor is further configured to transmit data of the first pressure and the second pressure. The controller is configured to receive the data and from the data of the first pressure and the second pressure, determine if the first user has rolled over from the first support portion to the second support portion.